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Validator framework: https://github.com/ld4l-labs/marc2rdf-validator
In a complementary effort, and to support its Tracer Bullet workflows in the LD4P project, Stanford developed a MARC → BIBFRAME conversion pipeline that took MARC record output from its ILS, used the Library of Congress BIBFRAME converter script, and loaded it into a Stanford-local triple store. A second phase of this work built a more robust conversion pipeline using Reactive programming, and employing a Kafka & Spark-based, high throughput, low latency converter.
YouTub Video: Reactive pipeline demo
Supporting code: Scala/Kafka/Spark Linked Data Pipeline (github repository)